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Reduce the near clip distance #13

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pdavidc opened this issue Aug 26, 2016 · 0 comments
Closed

Reduce the near clip distance #13

pdavidc opened this issue Aug 26, 2016 · 0 comments
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enhancement
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WWA v0.5.0

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pdavidc commented Aug 26, 2016

Modify World Wind Android to use the closest possible near clip distance that does not result in z-fighting. Currently, WWAndroid sets the near clip distance to 75% of the eye altitude, which is farther than necessary for the majority of eye distances.

World Wind Java implemented this capability by computing a near clip distance that achieved a 10 meter depth resolution at the far plane, a value empirically found to be sufficient for WWJ applications. See WWJ-460 for details:
http://issues.worldwind.arc.nasa.gov/jira/browse/WWJ-460
@pdavidc pdavidc added this to the v0.5.0 milestone Aug 26, 2016
@pdavidc pdavidc self-assigned this Sep 27, 2016
pdavidc added a commit that referenced this issue Sep 27, 2016
@pdavidc
Reduced the near clip distance per issue #13
78fafda 
The new approach drastically reduces the near clip distance, choosing values between 10% to 50% of the previous distances. Additional improvements can be made to the clipping distances by:
 - Reducing the far distance when the horizon is not in view.
 - Investigating a new shader based strategy recommended by @jgiovino,
@pdavidc pdavidc closed this as completed Sep 30, 2016
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enhancement
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WWA v0.5.0
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